I am not certain of the date, many cards refer to the 1950's.
Index Box
1950s Index Card
LOT OF 100 Vintage Library Card Catalog Index Cards 5x3 Craft Art Scrapbooking $14.71 - PicClick
Vintage 1385 Weis Heavy Gauge Metal File Drawer Index Card Box Recipes Etc.
Mead WireBound Ruled Index Cards, 3 x 5, Accessories
Metal Rolodex File
LOT OF 100 Vintage Library Card Catalog Index Cards 5x3 Craft
I am not certain of the date, many cards refer to the 1950's.
Vintage Handwritten Medical Notes Index cards & Weis index card box
Reusable Index Cards
Index Card Box Vintage Weis Heavy Gauge Green Metal File Drawer Trinket storage
Index Box